# physics

Planet Z is 1.00×10^4 km in diameter. The free-fall acceleration on Planet Z is 10.0 m/s^2.
a)What is the mass of Planet Z?
b)What is the free-fall acceleration 9000 km above Planet Z's north pole?

1. 👍 0
2. 👎 0
3. 👁 160

1. 👍 0
2. 👎 0
posted by bobpursley
2. 1.28*(10)^18

1. 👍 0
2. 👎 1
posted by Anonymous

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